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Proceedings Papers

Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, June 17–19, 2024
Paper Number: URTEC-4017241-MS
... and temporal resolution, enabling the measurement of fast-propagating sound waves. In this study, our focus is on utilizing SoS measured by DAS to estimate phase volume fraction profiles within a multi-phase fluid flow system in a downhole production zone equipped with fiber optic sensors. Specifically, we...
Proceedings Papers

Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, June 17–19, 2024
Paper Number: URTEC-4027567-MS
.... The model extends the scope of a thermal production profiling software with distributed acoustic sensing (DAS) production profile analysis. During the development process, we incorporate the existing wellbore thermal module in analyzing distributed temperature sensing (DTS) data with a newly developed DAS...
Proceedings Papers

Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, June 13–15, 2023
Paper Number: URTEC-3871673-MS
... in FO measurements for evaluating the stimulation performance in unconventional reservoirs. FO technique - Distributed Temperature Sensing (DTS) and Distributed Acoustic Sensing (DAS) cover the way to overcome the lack of knowledge in fracture diagnosis. Advances in this technique address challenges...
Proceedings Papers

Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, June 13–15, 2023
Paper Number: URTEC-3870123-MS
...URTeC: 3870123 Simulation of the Seismic Records (DAS) in a Borehole Throughout CO2 Storage Procedures José Pulido*1, Yiyu Ni1, 1. Earth and Space Sciences, University of Washington, Seattle, WA, United States. Copyright 2023, Unconventional Resources Technology Conference (URTeC) DOI 10.15530...
Proceedings Papers

Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, June 20–22, 2022
Paper Number: URTEC-3722235-MS
... dataset that was recorded concurrently with Low Frequency DAS measurements that were the main objective of the fiber installations. One goal of this paper is to introduce a rich open dataset that can provide researchers with a controlled set of microseismic measurements taken in a carefully designed...
Proceedings Papers

Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, July 26–28, 2021
Paper Number: URTEC-2021-5164-MS
... calibrating the response in terms of the measured strain as one can obtain from DAS, we present a workflow by which the full tensorial strain tensor can be produced over the reservoir. The moment tensor is proportional to the strain rate tensor though the rock properties of the medium. Using a mixed array...
Proceedings Papers

Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, July 20–22, 2020
Paper Number: URTEC-2020-2648-MS
... Abstract Fiber Optic Sensing, including both low-frequency Distributed Acoustic Sensing (DAS) and Distributed Strain Sensing (DSS), can be used to record strain rate or strain for hydraulic fracturing monitoring in an offset well. However, current work focusses on acquisition, processing...
Proceedings Papers

Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, July 22–24, 2019
Paper Number: URTEC-2019-1141-MS
... Effectiveness das nwbt perforation assumption active perforation perforation friction URTeC: 1141 Uncertainties in Step-down Test Interpretation for Evaluating Completions Effectiveness and Near Wellbore Complexities Somnath Mondal*1, Gustavo Ugueto*2, Paul Huckabee2, Magdalena Wojtaszek3, Talib...
Proceedings Papers

Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, July 22–24, 2019
Paper Number: URTEC-2019-291-MS
... Acoustic Sensing (DAS) and Distributed Temperature Sensing (DTS), can continuously monitor the hydraulic fracturing stimulation downhole and be compared with other monitoring technology such as microseismic. The DAS and DTS data, when integrated with the microseismic, highlight processes relevant...
Proceedings Papers

Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, July 23–25, 2018
Paper Number: URTEC-2901897-MS
... information, as well as, production data obtained by continuously monitoring a well using Fiber Optics (FO). In the example, we used Distributed Acoustic Sensing (DAS) to derive discrete production profiling results over a period of more than two years. This has enabled us to track the gas production of two...
Proceedings Papers

Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, July 24–26, 2017
Paper Number: URTEC-2670716-MS
... Abstract Hydraulic fracturing operations in unconventional reservoirs are typically monitored using geophones located either at the surface or in adjacent wellbores. A new approach to record hydraulic stimulations utilizes fiber-optic Distributed Acoustic Sensing (DAS). A fiber-optic cable...
Proceedings Papers

Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, August 1–3, 2016
Paper Number: URTEC-2459883-MS
..., fiber-optic cable was permanently installed with distributed acoustic sensing (DAS) and distributed temperature sensing (DTS) to monitor the hydraulic fracture stimulation and the downhole production profile for the life of the well. Real-time DAS and DTS monitoring were used during the stimulation...
Proceedings Papers

Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, August 1–3, 2016
Paper Number: URTEC-2458389-MS
...) throughout the clean fluid (pad) portion of the stimulation. However, LE treatment effectiveness during proppant slurry placement is highly impacted by several key parameters that may change significantly during stimulation. This paper shows how the combined results of FO Distributed Acoustic Sensing (DAS...
Proceedings Papers

Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, July 20–22, 2015
Paper Number: URTEC-2151906-MS
... Reservoir Surveillance production monitoring production control Upstream Oil & Gas hydraulic fracturing cluster efficiency Efficiency perforation cluster fracture initiation fluid distribution fluid leak Standard Deviation production logging isolation communication das...
Proceedings Papers

Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, July 20–22, 2015
Paper Number: URTEC-2158449-MS
... intervention, for all operations from completions to production to abandonment. Fiber-optic distributed acoustic sensing (DAS) systems work by pulsing light into a fiber and measuring the backscattered light along the fiber length. An acoustic pressure wave that contacts the cable will create a small strain...
Proceedings Papers

Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, August 25–27, 2014
Paper Number: URTEC-1922263-MS
... das multistage hydraulic seismic energy LPLD event hypocenter separation URTeC: 1922263 Utilizing Ant-Tracking to Identify Slowly Slipping Faults in the Barnett Shale Noha Sameh Farghal* and Mark D. Zoback, Stanford University, Stanford, CA, USA Copyright 2014, Unconventional Resources...
Proceedings Papers

Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, August 25–27, 2014
Paper Number: URTEC-1922140-MS
... operations on the McCray 2–26H well and included the acquisition of distributed temperature sensing (DTS), distributed acoustic sensing (DAS), bottomhole pressure data, surface and downhole microseismic, tracer logs, and post-treatment production logs. Diagnostic fracture injection test DFIT data and other...
Proceedings Papers

Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, August 12–14, 2013
Paper Number: URTEC-1619968-MS
... Summary In this paper we examine diagnostic tools for hydraulic fracture stimulation (HFS) that can help determine the geometry, reach, and effectiveness of the created fracture(s). In particular we focus on using the combination of micro-seismic and Distributed Acoustic Sensing (DAS...

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